<template>
  <div> BB {{ list }} </div>
</template>
<script>
import bus from './bus'
export default {
  data() {
    return {
      list: '111'
    }
  },
  mounted() {
    let that = this;
    bus.$on("changeaStr", function (data) {
      console.log('data', data)
      that.list = data;
    })
  }
}
</script>